Created
June 12, 2024 08:01
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Migrating Android Google Drive authorization from Deprecated GoogleSignin API to authorization
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| import android.app.Activity | |
| import android.content.Context | |
| import android.content.Intent | |
| import android.content.IntentSender.SendIntentException | |
| import androidx.core.app.ActivityCompat.startIntentSenderForResult | |
| import com.google.android.gms.auth.api.identity.AuthorizationRequest | |
| import com.google.android.gms.auth.api.identity.AuthorizationResult | |
| import com.google.android.gms.auth.api.identity.Identity | |
| import com.google.android.gms.common.api.Scope | |
| import com.google.android.gms.tasks.Tasks | |
| import com.google.api.client.http.javanet.NetHttpTransport | |
| import com.google.api.client.json.gson.GsonFactory | |
| import com.google.api.services.drive.Drive | |
| import com.google.api.services.drive.DriveScopes | |
| import com.google.auth.http.HttpCredentialsAdapter | |
| import com.google.auth.oauth2.AccessToken | |
| import com.google.auth.oauth2.IdTokenCredentials | |
| /** | |
| * GoogleSignIn (com.google.android.gms.auth.api.signin.GoogleSignIn) is now deprecated. We are advised to use Authorization for Android ( https://developers.google.com/identity/authorization/android ) | |
| * Sample provided there is quite minimal and does not go in to detail on how to proceed after getting the "AuthorizationResult" | |
| * This sample shows how to create "Drive" object after getting the "AuthorizationResult" | |
| * | |
| * Dependencies needed are: | |
| * com.google.auth:google-auth-library-oauth2-http | |
| * com.google.android.gms:play-services-auth | |
| * com.google.http-client:google-http-client-gson | |
| * com.google.api-client:google-api-client-android | |
| * com.google.apis:google-api-services-drive | |
| */ | |
| class GoogleSigningHelper { | |
| companion object { | |
| private const val tag = "GoogleSigningHelper" | |
| const val REQUEST_GOOGLE_SIGN_IN_CODE = 0 | |
| private fun getAuthorizationRequest() = AuthorizationRequest | |
| .builder() | |
| .setRequestedScopes(listOf(Scope(DriveScopes.DRIVE_FILE))) | |
| .build() | |
| private fun getAccessToken(context: Context): String? { | |
| val accessToken = try { | |
| val authorizationRequest = getAuthorizationRequest() | |
| val task = Identity.getAuthorizationClient(context) | |
| .authorize(authorizationRequest) | |
| Tasks.await(task).accessToken | |
| } catch (e: Exception) { | |
| CLog.logPrintStackTrace(e) | |
| null | |
| } | |
| return accessToken | |
| } | |
| fun getDriveService(context: Context): GoogleDriveAuthResult { | |
| val accessTokenString = getAccessToken(context) | |
| return if (accessTokenString != null) { | |
| val accessToken = AccessToken.newBuilder().setTokenValue(accessTokenString).build() | |
| val idTokenCredentials = IdTokenCredentials.create(accessToken) | |
| val httpCredentialsAdapter = HttpCredentialsAdapter(idTokenCredentials) | |
| GoogleDriveAuthResult.Success( | |
| Drive.Builder(NetHttpTransport(), GsonFactory(), httpCredentialsAdapter) | |
| .setApplicationName("NLL Drive Client") | |
| .build() | |
| ) | |
| } else { | |
| GoogleDriveAuthResult.RequireLogin | |
| } | |
| } | |
| fun signOut(context: Context) { | |
| //Sign out out is not supported by Identity.getAuthorizationClient | |
| } | |
| } | |
| fun requestSignIn(activity: Activity, onAlreadyConnected: (AuthorizationResult?) -> Unit) { | |
| val authorizationRequest = getAuthorizationRequest() | |
| Identity.getAuthorizationClient(activity) | |
| .authorize(authorizationRequest) | |
| .addOnSuccessListener { authorizationResult -> | |
| if (authorizationResult.hasResolution()) { | |
| // Access needs to be granted by the user | |
| try { | |
| authorizationResult.pendingIntent?.let { pendingIntent -> | |
| startIntentSenderForResult(activity, pendingIntent.intentSender, REQUEST_GOOGLE_SIGN_IN_CODE, null, 0, 0, 0, null) | |
| } | |
| } catch (e: SendIntentException) { | |
| CLog.logPrintStackTrace(e) | |
| } | |
| } else { | |
| onAlreadyConnected(authorizationResult) | |
| } | |
| } | |
| .addOnFailureListener { e -> | |
| CLog.logPrintStackTrace(e) | |
| } | |
| } | |
| fun handleSignInResult(activity: Activity, requestCode: Int, resultData: Intent?): AuthorizationResult? { | |
| if (requestCode == REQUEST_GOOGLE_SIGN_IN_CODE) { | |
| if (resultData != null) { | |
| val authorizationResultFromIntent = Identity | |
| .getAuthorizationClient(activity) | |
| .getAuthorizationResultFromIntent(resultData) | |
| return authorizationResultFromIntent | |
| } | |
| } | |
| return null | |
| } | |
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